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https://en.m.wikipedia.org/wiki/Ribbon_(computing)

Microsoft lets any program use that UI: https://docs.microsoft.com/en-us/windows/win32/windowsribbon...

I've only seen a few programs take up the offer though. Probably because the style is almost synonymous with MS Office as you've noted

Notably AutoCAD also uses ribbon=style interface, though I'm not sure if they use MS implementation or their own.

I used AutoCAD a while back and it wasn't the MS ribbon UI but custom.

One point of writing for macos or Windows is to follow the system guidelines.

So a good program should look and feel similar to other programs

Worth pointing out that ChessBase isn't strictly a game, it's more a research tool aimed at pros and club players. That said, it is a pretty poor UI even for those purposes.